Nd3+:GSAG是性能优良的942nm激光晶体.用提拉法成功生长Nd3+:GSAG单晶,研究其室温透射光谱,辨认位置高达29967cm-1的68个Nd3+晶场能级.对这些能级拟合了自由离子及晶场Hamilton参量,拟合标准偏差为16.7cm-1,表明实验与计算能级符合很好.获得的Hamilton参量可用于计算Nd3+:GSAG中Nd3+的波函数、预测晶场分裂以及研究发光特性等。
Nd3+:GSAG,a laser crystal of 942 nm with good performance,was grown by Czochralski method successfully,and its transmission spectra at room temperature were studied.Sixty-eight crystal field splitting levels of Nd3 + with the maximum up to 29967 cm-1 were identified,to which the Hamiltonian parameters of free-ion and crystal field were fitted,and the root-mean-square deviation of energy level fitting is 16.7 cm-1,which indicated that the experimental and calculated energy levels are well consistent.The obtained Hamiltonian parameters can be used to calculate the wavefunctions of Nd3 + in GSAG,predict its energy level splitting,study the luminescent properties and so on.